Multi-pass cells for post-compression of ultrashort laser pulses

Optica, Journal Year: 2022, Volume and Issue: 9(2), P. 197 - 197

Published: Jan. 19, 2022

Ultrafast lasers reaching extremely high powers within short fractions of time enable a plethora applications. They grant advanced material processing capabilities, are effective drivers for secondary photon and particle sources, reveal extreme light-matter interactions. also supply platforms compact accelerator technologies, with great application prospects tumor therapy or medical diagnostics. Many these scientific cases benefit from sources higher average peak powers. Following mode-locked dye titanium-doped sapphire lasers, broadband optical parametric amplifiers have emerged as peak- power ultrashort pulse lasers. A much more power-efficient alternative is provided by direct post-compression high-power diode-pumped ytterbium lasers—a route that to another level the invention novel spectral broadening approach, multi-pass cell technique. The method has enabled benchmark results yielding sub-50-fs pules at exceeding 1 kW, facilitated femtosecond energies above 100 mJ large compression ratios, supports picosecond few-cycle pulses setups. striking progress technique in past five years puts light tens hundreds TW multiple kW sight—an entirely new parameter regime ultrafast In this review, we introduce underlying concepts give brief guidelines design implementation. We then present an overview achieved performances both bulk gas-filled cells. Moreover, discuss prospective advances method, particular including opportunities applications demanding ultrahigh peak-power, repetition rate such plasma accelerators laser-driven ultraviolet sources.

Language: Английский

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High‐Power Laser Systems

Laser & Photonics Review, Journal Year: 2022, Volume and Issue: 16(5)

Published: March 6, 2022

Abstract High‐power laser sources are widely used in industrial precision processing and act as a new platform for strong‐field physics research using peak power over petawatt. This review focuses on realizing high‐energy solid‐state disk slab systems the nonlinear‐suppression strategies high‐power fiber functional fibers. First, implementations enabling technologies of lasers increasing from gigawatt to petawatt reviewed. Then mechanisms suppression deterioration effects (including stimulated Raman scattering, Brillouin transverse mode instability) various amplifiers analyzed. At same time, mechanism achievements current fibers introduced. Finally, challenges perspectives summarized.

Language: Английский

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High-energy few-cycle pulses: post-compression techniques

Advances in Physics X, Journal Year: 2020, Volume and Issue: 6(1)

Published: Nov. 30, 2020

Contemporary ultrafast science requires reliable sources of high-energy few-cycle light pulses. Currently two methods are capable generating such pulses: post compression short laser pulses and optical parametric chirped-pulse amplification (OPCPA). Here we give a comprehensive overview on the post-compression technology based Kerr-effect or ionization, with particular emphasis energy power scaling. Relevant types techniques discussed including free propagation in bulk materials, multiple-plate continuum generation, multi-pass cells, filaments, photonic-crystal fibers, hollow-core fibers self-compression techniques. We provide theoretical physics as well an in-depth description existing experimental realizations compression, especially those that can pulse duration mJ-scale energy. The achieved performances these compared terms important figures merit energy, duration, peak average power. some perspectives at end to emphasize expected future trends this technology.

Language: Английский

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Further Development of the Short‐Pulse Petawatt Laser: Trends, Technologies, and Bottlenecks

Laser & Photonics Review, Journal Year: 2022, Volume and Issue: 17(1)

Published: Oct. 26, 2022

Abstract The petawatt (PW) laser has experienced a rapid development in the past two decades, and tens of giant facilities have been constructed worldwide. After realizing 10–100 PW, it seems to be close some sort engineering limit but its focused peak intensity still is much lower than Schwinger limit, therefore technology improvements or innovations become indispensable for further increasing power as well intensity. By quick reviewing PW history, shown that reducing pulse duration near single optical cycle feasible (easy cheap) choice this purpose. Here, technologies optical‐cycle generation, ultrabroadband amplification, capability boosting aim provide possible approaches lasers are briefly reviewed discussed. Meanwhile, key bottlenecks challenge current future short‐pulse their solutions summarized This review aims roadmap next‐stage laser.

Language: Английский

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Post-compression of femtosecond laser pulses using self-phase modulation: from kilowatts to petawatts in 40 years

Quantum Electronics, Journal Year: 2022, Volume and Issue: 52(3), P. 208 - 226

Published: Feb. 28, 2022

Abstract The pulse duration at the output of femtosecond lasers is usually close to Fourier limit, and can be shortened by increasing spectral width. To this end, use made self-phase modulation when a propagates in medium with cubic nonlinearity. Then, chirp (frequency dependence spectrum phase) compressed due linear dispersion element, which introduces same modulus, but opposite sign. This post-compression, known since 1960s, has been widely used being developed up present for pulses energies from fractions nJ tens J. review devoted theoretical foundations method, problems energy scaling, discussion results more than 150 experimental studies.

Language: Английский

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Solitary beam propagation in periodic layered Kerr media enables high-efficiency pulse compression and mode self-cleaning

Light Science & Applications, Journal Year: 2021, Volume and Issue: 10(1)

Published: March 10, 2021

Abstract Generating intense ultrashort pulses with high-quality spatial modes is crucial for ultrafast and strong-field science can be achieved by nonlinear supercontinuum generation (SCG) pulse compression. In this work, we propose that the of quasi-stationary solitons in periodic layered Kerr media greatly enhance light-matter interaction fundamentally improve performance SCG compression condensed media. With both experimental theoretical studies, successfully identify these solitary reveal their unified condition stability. Space-time coupling shown to strongly influence stability solitons, leading variations spectral, temporal profiles femtosecond pulses. Taking advantage unique characteristics modes, first demonstrate single-stage from 170 22 fs an efficiency >85%. The high spatiotemporal quality compressed further confirmed high-harmonic generation. We also provide evidence efficient mode self-cleaning, which suggests rich self-organization laser beams a resonator. This work offers route towards highly efficient, simple, stable flexible solutions state-of-the-art ytterbium technology.

Language: Английский

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Low repetition rate 915 nm figure-9 ultrafast laser with all-fiber structure

Optics Express, Journal Year: 2024, Volume and Issue: 32(7), P. 11271 - 11271

Published: March 1, 2024

The advent of optical metrology applications has necessitated the development compact, reliable, and cost-effective picosecond lasers operating around 900 nm, specifically catering to requirements precise ranging. In response this demand, our work introduces an innovative solution—an all-fiber, all-polarization-maintaining (PM) figure-9 mode-locked laser at 915 nm. proposed Nd-doped fiber a 69.2 m long cavity length, strategically designed optimized yield pulses with combination high pulse energy low repetition rate. can generate nm 4.65 nJ, duration 15.2 ps under rate 3.05 MHz. 1064 amplified spontaneous emission (ASE) is deliberately filtered out, in order prevent parasitic lasing increase spectral proportion laser. all-PM configuration imparts exceptional mode-locking performance environmental robustness, which confirmed by long-term output power stability test. This compact reliable could be promising light source for like inter-satellite

Language: Английский

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Scaling rules for high quality soliton self-compression in hollow-core fibers

Optics Express, Journal Year: 2021, Volume and Issue: 29(12), P. 19147 - 19147

Published: May 6, 2021

Soliton dynamics can be used to temporally compress laser pulses few fs durations in many different spectral regions. Here we study analytically, numerically and experimentally the scaling of soliton noble gas-filled hollow-core fibers. We identify an optimal parameter region, taking account higher-order dispersion, photoionization, self-focusing, modulational instability. Although for single-shots effects photoionization reduced by using lighter gases, they become increasingly important as repetition rate rises. For same optical nonlinearity, higher pressure longer diffusion times gases considerably enhance long-term ionization, a result pulse-by-pulse buildup refractive index changes. To illustrate counter-intuitive nature these predictions, compressed 250 at 1030 nm 80-cm-long photonic crystal fiber (core radius 15 µm) ∼5 duration argon neon, found that, although neon performed better 1 MHz, stable compression was still possible up 10 MHz.

Language: Английский

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Unified and vector theory of Raman scattering in gas-filled hollow-core fiber across temporal regimes

APL Photonics, Journal Year: 2024, Volume and Issue: 9(3)

Published: March 1, 2024

Raman scattering has found renewed interest owing to the development of gas-filled hollow-core fibers, which constitute a unique platform for exploration novel ultrafast nonlinear phenomena beyond conventional solid-core-fiber and free-space systems. Much progress been made through models particular interaction regimes, are delineated by relation excitation pulse duration time scales response. However, current experimental settings not limited one regime, prompting need tools spanning multiple regimes. Here, we present theoretical framework that accomplishes this goal. The theory allows us review recent with fresh perspective, makes new connections between distinct temporal regimes scattering, reveals degrees freedom controlling physics. Specific topics addressed include transient gain, interplay electronic nonlinearities in short-pulse propagation, interactions short pulses mediated phonon waves. model also accommodates vector effects, have largely neglected prior works on gases. polarization dependence gain effects via waves is investigated model. Throughout Perspective, results compared realistic numerical simulations. code implements freely available. We hope unified tool described here will accelerate Raman-scattering enable applications.

Language: Английский

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Near-petahertz fieldoscopy of liquid

Nature Photonics, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 21, 2024

Abstract Measuring transient optical fields is pivotal not only for understanding ultrafast phenomena but also the quantitative detection of various molecular species in a sample. Here we demonstrate near-petahertz electric field few femtosecond pulses with 200 attosecond temporal resolution and subfemtojoule sensitivity. By field-resolved impulsively excited molecules liquid phase, termed fieldoscopy, isolation response target from those environment excitation pulse. In proof-of-concept analysis aqueous samples, field-sensitive combination bands 4.13 μmol ethanol first time. This method expands scope sample to higher sensitivity dynamic range, while simultaneous direct measurements phase intensity information pave path towards high-resolution biological spectro-microscopy.

Language: Английский

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